What happens during a fire in Type II Non-Combustible construction?

In Type II Non-Combustible construction, the materials used are primarily non-combustible, which means they do not ignite or contribute fuel to a fire. However, despite the non-combustible nature of these materials, heat buildup can still occur during a fire. As a fire burns, the high temperatures generated can affect structural supports, even if those supports are made of materials that do not ignite easily, such as steel or concrete.

When these materials are subjected to extreme heat, they can lose their structural integrity. For example, steel can weaken and lose its strength at high temperatures, potentially leading to failure. This is critical to recognize because firefighters need to be aware that while the materials are designed to resist combustion, the heat generated in a fire can still compromise their effectiveness in supporting the structure. Therefore, it is essential to consider the potential for structural support failure due to heat buildup during fire incidents in Type II Non-Combustible structures.